Turn off the TV and unplug it. Insert the USB, then hold the Power button on the TV while plugging it back in. The standby light should start flashing, indicating the update is in progress.
If one part is missing or corrupted, the extraction will fail, and the firmware will be unusable. Download M538 3840x2160 AKAI AKTV5010 part12 rar
Since downloading split .rar files (like "part 12") from unofficial sources can be risky, The Role of Firmware in Modern Television The firmware of a smart TV, such as the AKAI AKTV5010 Turn off the TV and unplug it
If you have successfully gathered all the parts and extracted the file, the general process for an AKAI TV reflash is: the extraction will fail